Experiment 2 : Transport Across Membrane Name : Matrix No : Group : B Semester : 1 Date of Experiment : 05.09.2013 Lecturer’s Name : Miss OBJECTIVE To study the effects of hypotonic‚ hypertonic and isotonic solutions on plant and animal cells. INTRODUCTION In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes‚ which are lipid bilayers
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WAYS TO REDUCE THE EFFECTS OF GLOBAL WARMING Global Warming refers to the gradual increase in the Earth’s temperature as a result of the growing concentration of human induced green house gases which are carbon dioxide‚ chlorofluorocarbons and hydro fluorocarbon in our atmosphere. Global warming can be caused by the use of fossil fuels‚ and industrial or agricultural processes. Man-made emissions are adding to the amount of carbon dioxide already being naturally released. These
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Driving a car may not seem as dangerous as it is due to it being a daily routine‚ but in truth everyday people risk lives by letting themselves get distracted. On average in the U.S. alone there over 6 million car accidents per year of which over 1060 accidents per day involve a distracted party. The causes of these distracted drivers are caused by anything for the surroundings of the vehicle‚ the components inside‚ and the condemned cell phone usage. Cars and trucks all have their downsides‚ nevertheless
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Dhaka. This article is dedicated to determine the current condition of traffic management in Chittagong City. This article explore the causes involved in traffic congestion including heavy concentration of vehicles‚ absence of adequate public transport‚ inadequate road infrastructure‚ faulty signaling equipment and poor enforcement of traffic rules. At the end of the paper the researchers tried to identify the solution of traffic jam in Chittagong Metropolitan City. Keywords: Traffic congestion‚ vehicles
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Active and passive transport are the ways in which cells allow things to move into and out of the cell through the cell membrane. They include many different ways to transport things. Passive transport requires no expenditure of energy by the cell. However‚ Active transport requires ATPs which have energy in order for it to move something through the cell membrane. There are different types of transport to suit the sizes of molecules as well. Passive transport includes diffusion‚ osmosis‚ and
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Membrane Transport Christopher Gaita‚ Deija Williams‚ Elisabeth Johnston & Megan Lade University of Phoenix (Online Campus) Amy Sullivan Introduction: Membrane Transport • What is membrane transport • Types – – – – Diffusion Osmosis Active Transport Endocytosis/Exocytosis Photo Courtesy Of: http://hyperphysics.phy-astr.gsu.edu/hbase/biology/celmem.html Osmosis • Example: A semipermeable membrane bag containing a 30% sugar solution is placed in a beaker of pure water. – Diffusion or osmosis
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Gaseous exchange and transport Movement of chemicals in plants and animals -Chemicals that are being moved into the body‚ within the body or out of the body are gases‚ this movement is known as gaseous exchange. -The gases being moved in our out of the body need to move across the surface area of the body‚ in most cases a special surface area has been developed. -The surface that the gases cross is called the respiratory surface and the gases move across this surface by the process of diffusion
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Transport & Service costing Service Costing Unit costing is the method of costing used when the cost units are identical. Identical cost units should have identical costs and this concept of equality of costs is the basic feature of unit costing. It may be noted that process costs‚ output costing and service costing are the sub-divisions of unit costing method. Service Costing – Nature and Problem: Service or operating cost is the cost of providing services. Service costing
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Membrane Transport Process Process Energy Source Description Examples Passive processes Simple diffusion Kinetic energy Kinetic energy Net movement of particles (ions. molecules. etc.) from an area of their higher concentration to an area of their lower concentration. that is. along their concentration gradient Movement of fats‚ oxygen‚ carbon dioxide through the lipid portion of the membrane‚ and ions through protein channels under certain conditions Osmosis Kinetic energy Simple diffusion
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Abstract: This paper describes transport governance and ownership from a geographical standpoint (Shaw‚ 2008). It sets out the results of introductory work on the current structures as well as the potential options possible for future arrangements (AGMA‚ 2009). It is important to understand the role that the state plays in transport because the territorial governments are greatly involved in the ownership and management of all transport activities. The policies and strategies they adopt over a period
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